Clinical thermometer



M. D'. DREYFUS.

CLINlCAL THERMOMETER.

APPLICATION man ocT. 1s-, 1'920.

1,391,881, Pmndsept. 27 1921.

NUNITED sTATESifgrzNT OFFICE.

MA'x n. nnEYrUs, 0F NEwYonm n. Y.

' CLINICAL THERMOMETER.

To 'all fw hom t may concern j Be it knownthat I, Max D. DREYFUS, a citizen Vof the United States of America, residing atNew' Yorkcity, county and State of New York, have invented4 certain-.new

and useful Improvements in- Clinical Thermometers, of which-the following is a full, i

clear, and exact description.

This invention relates to improvements in thermometers of the type used for clinical or veterinary purposes, one of the objects of the invention being to provide an article of this character, which is adapted to be retained in place, when used rectically, by means of a bulbous formation', at the chambered end of the tube, or end containing the mercury.

A further feature of the invention consists of a rib passing partly around the tube to prevent t-he tube from rolling, an advantageous feature of the rib being to position the tube, when it is laid upon a table or the like, so that the index or graduations can be readily read; that is to say, to position the tube so that the mercury within same will be more readily visible. It is a well known fact that these thermometers have to be held in a certain position in order to see the fine line of mercury under the indexed surface of the tube. By means of the positioning rib, which I employ, vthe tube will always be positioned, when laid upon a support sol that the index can be easily read relatively to the mercury line. I will now proceed to describe my invention in detail, the novel features of which I will finally point out in theV appended claims, reference being had to the` accompanying drawing, wherein :n-

Figure 1 illustrates my improved thermometer in elevation, the index being omitted; ,Y

Fig. 2 illustrates the thermometer as posi-` tioned by the positioning rib for reading;

Fig. 3 is an end view, enlarged, looking from the bluntv end of thetube;

Figs. 4, 5 and 6 are fragmentary views,

illustrating different steps in the application of the rib to the tube.

As herein constructed, my improved thermometer consists of a glass body portion 7, .which is blunt at one end, as indicated byV 8, and pointed at the opposite end, as indicated by 9. Adjacent the pointed end 9, the body member is enlarged to form a spherical or bulbous portion 10 ladjacent to Specification of Letters Patentl ,')Pateneed sept. 27, 1921.

Application mea october 18,1926. serialv No.. 417,628.

which thesaid body member` is reducedy iny diameter, as at 11,v to form a constricte'd portionadjacent the bulbto coacttherewith g ,to retain-1 the vtube-or thermometer inzposi- Ytion when Vrectal readings Aareto ybe taken, especiallyfin case the/,instrument is'` being u 'sedfor ,animals. j rlhe end `9v aidsmaterially in the insertion of the thermometer. The contraction of the muscles after the thermometer has been inserted, will hold the instrument in place. The bulb 10 will act as a drag to prevent the instrument from being prematurely forced out of place by muscular action. As a matter of fact the flesh will contract and envelop the bulb 10.

A further feature of the invention consists of rib 12 carried bythe body 7 and preferably located adjacent the. blunt end 8. The rib consists of leg members 13 and` 14 joined at the ends as at 14a to extend over-v the edgeV 15 ofv the tube, which is usually triangular in form. It will be seen in Fig. v3 that thefleg 13 is longer than leg 14, the free end of-each leg being enlarged yas at 16; hence, when the'thermometer is laid upon a table, the lens 15 will be located somewhat to one side'of a vertical line drawn from the center of surface 17 of the tube, as indicated in Fig. 3. The legs 13 and 14 will be proportioned to position the tube at such angle as to facilitate the reading of the thermometer, the mercury being indicated by 18 and the graduations by 19. Then the tube is laid upon a table or the like, the rib 12 also acts to prevent the tubefrom rolling whenlaid down. To ap'- ply the rib, which like the tube, is made of glass, the tube 7 will, at one end, be drawn, as indicated by 20, Fig. 4, to produce annuwill be slipped over the drawn portion'2() and fittedagainst the shoulders 21. (Seef Fig.` 5). After the rib has been slipped into place, it will be fused to the body 7. The rib 12 will nowbe located within an annular recess 22 and cannot be slipped off the tube. The drawing of the tube, and also the fusing of the rib will be accomplished with the aid of heat in the usual manner.

Having described my invention what I claimcand desire to secure by Letters Patent is z- 1. In combination with a clinical thermometer' of triangular cross: section, having an index on one of the walls thereof, means i oro associated with the thermometer arranged to position the Wall having the index, when the thermometer is laid upon a support at such angle with respect to said support as to facilitate the reading of the thermometer.

2. In combination with a clinical thermometer of triangular cross section, having an index on one of the Walls thereof, means projecting from opposite walls of the thermometer arranged to position the Wall having the index, when the thermometer is laid upon a support, at such angle with respect to said support as to facilitate the reading or' the thermometer.

3. In combination with a clinical ther- Inometer, -having an index, a rib carried thereby consisting of leg members, one leg member being longer than the other, Whereby the index portion of the thermometer Will be positioned, When the thermometer is laid upon a support, at such angle relative to the support as to facilitate the reading of the thermometer, the longer leg member being located on the indexed surface of the thermometer and extending beyond same.

Signed at New York city, N. Y., this 14 day of October, 1920.

p l p MAX` D. DREYFUS.

v Witnesses:

MAURICE BLOCK,

'EDWARD A. JARVIS. 

